Is he serious?

My SO just got off his temporary job (lasted 2mo) he’s looking for new work as well as I am, I’ve been a ftm for 2 years..but yah know I expected him to want to help with the kids while he finds a new job... BIG NO!! My 3 week old daughter has gas that makes her wake up all through the night screaming!!!! I ask him for help and he just rolls back over... recently he has been sleeping on the couch because he can’t sleep” my 2 year old has the stomach bug so he’s been needy.. my SO and I made a deal when I was pregnant that he would change my toddler and I would change our newborn.. that’s out the window now... guys I’m so fed up feeling like a single parent.. in a relationship... what can I do besides the obvious ?